arch-arm,sim: make compile on FreeBSD

Add missing #include / #define to make at least X86 and ARM gem5.opt
compile again on FreeBSD.

Change-Id: I3faa1437fe7175f3b8174c6f0b6a4c42b6396370
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41295
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
2 files changed